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Simplifying 3sin(3x) + -5cos(x) = 0 Remove parenthesis around (3x) 3ins * 3x + -5cos(x) = 0 Reorder the terms for easier multiplication: 3 * 3ins * x + -5cos(x) = 0 Multiply 3 * 3 9ins * x + -5cos(x) = 0 Multiply ins * x 9insx + -5cos(x) = 0 Multiply cos * x 9insx + -5cosx = 0 Reorder the terms: -5cosx + 9insx = 0 Solving -5cosx + 9insx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-9insx' to each side of the equation. -5cosx + 9insx + -9insx = 0 + -9insx Combine like terms: 9insx + -9insx = 0 -5cosx + 0 = 0 + -9insx -5cosx = 0 + -9insx Remove the zero: -5cosx = -9insx Divide each side by '-5osx'. c = 1.8ino-1 Simplifying c = 1.8ino-1
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